"""
字符串可以使用单引,双引,三引号来定义.
"""
s1 = 'hello'
s2 = "你好"
s3 = """ 
        hello 
        123 
        word
     """
print(s1,s2,s3)
print(type(s1))  #<class 'str'>
print(type(s2))  #<class 'str'>
print(type(s3))  #<class 'str'>

# 定义特殊字符串 I'm
# s4 = 'I'm'
s5 = "I'm"
s6 = 'I\'m' # \ 是转义字符,转义就是把字符的特殊含义去掉,变为仅仅就是个字符.
print(s5)# I'm
print(s6)# I'm
